4 * Copyright 1990,1991 by the Massachusetts Institute of Technology
5 * For distribution and copying rights, see the file "mit-copyright.h"
8 * Copyright (c) 2005, 2006
9 * The Linux Box Corporation
12 * Permission is granted to use, copy, create derivative works
13 * and redistribute this software and such derivative works
14 * for any purpose, so long as the name of the Linux Box
15 * Corporation is not used in any advertising or publicity
16 * pertaining to the use or distribution of this software
17 * without specific, written prior authorization. If the
18 * above copyright notice or any other identification of the
19 * Linux Box Corporation is included in any copy of any
20 * portion of this software, then the disclaimer below must
23 * This software is provided as is, without representation
24 * from the Linux Box Corporation as to its fitness for any
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29 * regents of the Linux Box Corporation shall not be liable
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32 * out of or in connection with the use of the software, even
33 * if it has been or is hereafter advised of the possibility of
37 #include <afsconfig.h>
38 #include <afs/param.h>
46 #include <afs/token.h>
48 #define KERBEROS_APPLE_DEPRECATED(x)
52 #elif HAVE_ET_COM_ERR_H
53 # include <et/com_err.h>
54 #elif HAVE_KRB5_COM_ERR_H
55 # include <krb5/com_err.h>
57 # error No com_err.h? We need some kind of com_err.h
60 #ifndef HAVE_KERBEROSV_HEIM_ERR_H
61 #include <afs/com_err.h>
65 #include <sys/ioccom.h>
69 #include <afs/cellconfig.h>
71 #include <afs/venus.h>
72 #include <afs/ptserver.h>
73 #include <afs/ptuser.h>
74 #include <afs/pterror.h>
75 #include <afs/dirpath.h>
76 #include <afs/afsutil.h>
79 #include "linked_list.h"
81 #ifdef HAVE_KRB5_CREDS_KEYBLOCK
84 #ifdef HAVE_KRB5_CREDS_SESSION
85 #define USING_HEIMDAL 1
91 #ifndef AFS_TRY_FULL_PRINC
92 #define AFS_TRY_FULL_PRINC 1
93 #endif /* AFS_TRY_FULL_PRINC */
95 #define AKLOG_TRYAGAIN -1
96 #define AKLOG_SUCCESS 0
98 #define AKLOG_SOMETHINGSWRONG 2
100 #define AKLOG_KERBEROS 4
101 #define AKLOG_TOKEN 5
102 #define AKLOG_BADPATH 6
114 /* RedHat 4.x doesn't seem to define this */
115 #define MAXSYMLINKS 5
118 #define DIR '/' /* Character that divides directories */
119 #define DIRSTRING "/" /* String form of above */
120 #define VOLMARKER ':' /* Character separating cellname from mntpt */
121 #define VOLMARKERSTRING ":" /* String form of above */
125 char realm[REALM_SZ];
128 static krb5_ccache _krb425_ccache = NULL;
131 * Why doesn't AFS provide these prototypes?
134 extern int pioctl(char *, afs_int32, struct ViceIoctl *, afs_int32);
140 extern char *afs_realm_of_cell(krb5_context, struct afsconf_cell *, int);
141 static int isdir(char *, unsigned char *);
142 static krb5_error_code get_credv5(krb5_context context, char *, char *,
143 char *, krb5_creds **);
144 static int get_user_realm(krb5_context, char **);
146 #define TRYAGAIN(x) (x == AKLOG_TRYAGAIN || \
147 x == KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN || \
148 x == KRB5KRB_ERR_GENERIC)
150 #if defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
152 #define get_princ_str(c, p, n) krb5_princ_component(c, p, n)->data
153 #define get_princ_len(c, p, n) krb5_princ_component(c, p, n)->length
154 #define second_comp(c, p) (krb5_princ_size(c, p) > 1)
155 #define realm_data(c, p) krb5_princ_realm(c, p)->data
156 #define realm_len(c, p) krb5_princ_realm(c, p)->length
158 #elif defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING)
160 #define get_princ_str(c, p, n) krb5_principal_get_comp_string(c, p, n)
161 #define get_princ_len(c, p, n) strlen(krb5_principal_get_comp_string(c, p, n))
162 #define second_comp(c, p) (krb5_principal_get_comp_string(c, p, 1) != NULL)
163 #define realm_data(c, p) krb5_realm_data(krb5_principal_get_realm(c, p))
164 #define realm_len(c, p) krb5_realm_length(krb5_principal_get_realm(c, p))
167 #error "Must have either krb5_princ_size or krb5_principal_get_comp_string"
170 #if !defined(HAVE_KRB5_ENCRYPT_TKT_PART) && defined(HAVE_ENCODE_KRB5_ENC_TKT_PART) && defined(HAVE_KRB5_C_ENCRYPT)
171 extern krb5_error_code encode_krb5_enc_tkt_part (const krb5_enc_tkt_part *rep,
175 krb5_encrypt_tkt_part(krb5_context context,
176 const krb5_keyblock *key,
183 if ((code = encode_krb5_enc_tkt_part(ticket->enc_part2, &data)))
185 if ((code = krb5_c_encrypt_length(context, key->enctype,
186 data->length, &enclen)))
188 ticket->enc_part.ciphertext.length = enclen;
189 if (!(ticket->enc_part.ciphertext.data = malloc(enclen))) {
193 if ((code = krb5_c_encrypt(context, key, KRB5_KEYUSAGE_KDC_REP_TICKET,
194 0, data, &ticket->enc_part))) {
195 free(ticket->enc_part.ciphertext.data);
196 ticket->enc_part.ciphertext.data = 0;
208 #if defined(HAVE_KRB5_CREDS_KEYBLOCK)
210 #define get_cred_keydata(c) c->keyblock.contents
211 #define get_cred_keylen(c) c->keyblock.length
212 #define get_creds_enctype(c) c->keyblock.enctype
214 #elif defined(HAVE_KRB5_CREDS_SESSION)
216 #define get_cred_keydata(c) c->session.keyvalue.data
217 #define get_cred_keylen(c) c->session.keyvalue.length
218 #define get_creds_enctype(c) c->session.keytype
221 #error "Must have either keyblock or session member of krb5_creds"
224 /* MITKerberosShim logs but returns success */
225 #if !defined(HAVE_KRB5_524_CONV_PRINCIPAL) || defined(AFS_DARWIN110_ENV) || (!defined(HAVE_KRB5_524_CONVERT_CREDS) && !defined(HAVE_KRB524_CONVERT_CREDS_KDC))
226 #define HAVE_NO_KRB5_524
227 #elif !defined(HAVE_KRB5_524_CONVERT_CREDS) && defined(HAVE_KRB524_CONVERT_CREDS_KDC)
228 #define krb5_524_convert_creds krb524_convert_creds_kdc
232 #define deref_keyblock_enctype(kb) \
235 #define deref_entry_keyblock(entry) \
238 #define deref_session_key(creds) \
241 #define deref_enc_tkt_addrs(tkt) \
244 #define deref_enc_length(enc) \
245 ((enc)->cipher.length)
247 #define deref_enc_data(enc) \
250 #define krb5_free_keytab_entry_contents krb5_kt_free_entry
253 #define deref_keyblock_enctype(kb) \
256 #define deref_entry_keyblock(entry) \
259 #define deref_session_key(creds) \
262 #define deref_enc_tkt_addrs(tkt) \
265 #define deref_enc_length(enc) \
266 ((enc)->ciphertext.length)
268 #define deref_enc_data(enc) \
269 ((enc)->ciphertext.data)
273 #define deref_entry_enctype(entry) \
274 deref_keyblock_enctype(&deref_entry_keyblock(entry))
277 * Provide a replacement for strerror if we don't have it
280 #ifndef HAVE_STRERROR
281 extern char *sys_errlist[];
282 #define strerror(x) sys_errlist[x]
283 #endif /* HAVE_STRERROR */
285 static char *progname = NULL; /* Name of this program */
286 static int dflag = FALSE; /* Give debugging information */
287 static int noauth = FALSE; /* If true, don't try to get tokens */
288 static int zsubs = FALSE; /* Are we keeping track of zephyr subs? */
289 static int hosts = FALSE; /* Are we keeping track of hosts? */
290 static int noprdb = FALSE; /* Skip resolving name to id? */
291 static int linked = FALSE; /* try for both AFS nodes */
292 static int afssetpag = FALSE; /* setpag for AFS */
293 static int force = FALSE; /* Bash identical tokens? */
294 static int do524 = FALSE; /* Should we do 524 instead of rxkad2b? */
295 static char *keytab = NULL; /* keytab for akimpersonate */
296 static char *client = NULL; /* client principal for akimpersonate */
297 static linked_list zsublist; /* List of zephyr subscriptions */
298 static linked_list hostlist; /* List of host addresses */
299 static linked_list authedcells; /* List of cells already logged to */
301 /* A com_error bodge. The idea here is that this routine lets us lookup
302 * things in the system com_err, if the AFS one just tells us the error
307 redirect_errors(const char *who, afs_int32 code, const char *fmt, va_list ap)
314 const char *str = afs_error_message(code);
315 if (strncmp(str, "unknown", strlen("unknown")) == 0) {
316 #ifdef HAVE_KRB5_SVC_GET_MSG
317 krb5_svc_get_msg(code,&str);
318 #elif defined(HAVE_KRB5_GET_ERROR_MESSAGE)
319 krb5_context context;
320 if (krb5_init_context(&context) == 0) {
321 str = krb5_get_error_message(context, code);
322 krb5_free_context(context);
325 ; /* IRIX apparently has neither: use the string we have */
330 #ifdef HAVE_KRB5_SVC_GET_MSG
331 krb5_free_string(str);
335 vfprintf(stderr, fmt, ap);
342 afs_dprintf(char *fmt, ...) {
352 copy_cellinfo(cellinfo_t *cellinfo)
354 cellinfo_t *new_cellinfo;
356 if ((new_cellinfo = malloc(sizeof(cellinfo_t))))
357 memcpy(new_cellinfo, cellinfo, sizeof(cellinfo_t));
359 return ((char *)new_cellinfo);
364 get_cellconfig(const char *config, char *cell,
365 struct afsconf_cell *cellconfig, char **local_cell)
367 int status = AKLOG_SUCCESS;
368 struct afsconf_dir *configdir;
370 memset(cellconfig, 0, sizeof(*cellconfig));
372 *local_cell = malloc(MAXCELLCHARS);
373 if (*local_cell == NULL) {
374 fprintf(stderr, "%s: can't allocate memory for local cell name\n",
379 if (!(configdir = afsconf_Open(config))) {
381 "%s: can't get afs configuration (afsconf_Open(%s))\n",
386 if (cell != NULL && cell[0] == '\0') {
387 /* Use the local cell */
391 /* XXX - This function modifies 'cell' by passing it through lcstring */
392 if (afsconf_GetCellInfo(configdir, cell, NULL, cellconfig)) {
394 fprintf(stderr, "%s: Can't get information about cell %s.\n",
397 fprintf(stderr, "%s: Can't get information about the local cell.\n",
401 } else if (afsconf_GetLocalCell(configdir, *local_cell, MAXCELLCHARS)) {
402 fprintf(stderr, "%s: can't determine local cell.\n", progname);
406 afsconf_Close(configdir);
412 extract_realm(krb5_context context, krb5_principal princ) {
416 len = realm_len(context, princ);
417 if (len > REALM_SZ-1)
420 realm = malloc(sizeof(char) * (len+1));
424 strncpy(realm, realm_data(context, princ), len);
431 get_realm_from_cred(krb5_context context, krb5_creds *v5cred, char **realm) {
432 #if !defined(HEIMDAL) && defined(HAVE_KRB5_DECODE_TICKET)
433 krb5_error_code code;
438 code = krb5_decode_ticket(&v5cred->ticket, &ticket);
442 *realm = extract_realm(context, ticket->server);
446 krb5_free_ticket(context, ticket);
456 * Get a Kerberos service ticket to use as the base of an rxkad token for
460 * An initialized Kerberos v5 context
462 * The realm to look in for the service principal. If NULL, then the
463 * realm is determined from the cell name or the user's credentials
464 * (see below for the heuristics used)
466 * The cell information for the cell to obtain a ticket for
468 * A Kerberos credentials structure containing the ticket acquired
469 * for the cell. This is a dynamically allocated structure, which
470 * should be freed by using the appropriate Kerberos API function.
471 * @param[out] realmUsed
472 * The realm in which the cell's service principal was located. If
473 * unset, then the principal was located in the same realm as the
474 * current user. This is a malloc'd string which should be freed
478 * 0 on success, an error value upon failure
481 * This code tries principals in the following, much debated,
484 * If the realm is specified on the command line we do
485 * - afs/cell@COMMAND-LINE-REALM
486 * - afs@COMMAND-LINE-REALM
489 * - afs/cell@REALM-FROM-USERS-PRINCIPAL
490 * - afs/cell@krb5_get_host_realm(db-server)
491 * Then, if krb5_get_host_realm(db-server) is non-empty
492 * - afs@ krb5_get_host_realm(db-server)
494 * - afs/cell@ upper-case-domain-of-db-server
495 * - afs@ upper-case-domain-of-db-server
497 * In all cases, the 'afs@' variant is only tried where the
498 * cell and the realm match case-insensitively.
502 rxkad_get_ticket(krb5_context context, char *realm,
503 struct afsconf_cell *cell,
504 krb5_creds **v5cred, char **realmUsed) {
505 char *realm_of_cell = NULL;
506 char *realm_of_user = NULL;
507 char *realm_from_princ = NULL;
513 if ((status = get_user_realm(context, &realm_of_user))) {
514 fprintf(stderr, "%s: Couldn't determine realm of user:", progname);
515 afs_com_err(progname, status, " while getting realm");
516 status = AKLOG_KERBEROS;
523 /* Cell on command line - use that one */
524 if (realm && realm[0]) {
525 realm_of_cell = realm;
526 status = AKLOG_TRYAGAIN;
527 afs_dprintf("We were told to authenticate to realm %s.\n", realm);
529 /* Initially, try using afs/cell@USERREALM */
530 afs_dprintf("Trying to authenticate to user's realm %s.\n",
532 realm_of_cell = realm_of_user;
533 status = get_credv5(context, AFSKEY, cell->name, realm_of_cell,
536 /* If that failed, try to determine the realm from the name of
537 * one of the DB servers */
538 if (TRYAGAIN(status)) {
539 realm_of_cell = afs_realm_of_cell(context, cell, FALSE);
540 if (!realm_of_cell) {
541 fprintf(stderr, "%s: Couldn't figure out realm for cell "
542 "%s.\n", progname, cell->name);
546 if (realm_of_cell[0])
547 afs_dprintf("We've deduced that we need to authenticate"
548 " to realm %s.\n", realm_of_cell);
550 afs_dprintf("We've deduced that we need to authenticate "
551 "using referrals.\n");
555 if (TRYAGAIN(status)) {
556 /* If we've got the full-princ-first option, or we're in a
557 * different realm from the cell - use the cell name as the
559 if (AFS_TRY_FULL_PRINC ||
560 strcasecmp(cell->name, realm_of_cell)!=0) {
561 status = get_credv5(context, AFSKEY, cell->name,
562 realm_of_cell, v5cred);
564 /* If we failed & we've got an empty realm, then try
565 * calling afs_realm_for_cell again. */
566 if (TRYAGAIN(status) && !realm_of_cell[0]) {
567 /* This time, get the realm by taking the domain
568 * component of the db server and make it upper case */
569 realm_of_cell = afs_realm_of_cell(context, cell, TRUE);
570 if (!realm_of_cell) {
572 "%s: Couldn't figure out realm for cell %s.\n",
573 progname, cell->name);
576 afs_dprintf("We've deduced that we need to authenticate"
577 " to realm %s.\n", realm_of_cell);
578 status = get_credv5(context, AFSKEY, cell->name,
579 realm_of_cell, v5cred);
583 /* If the realm and cell name match, then try without an
584 * instance, but only if realm is non-empty */
586 if (TRYAGAIN(status) &&
587 strcasecmp(cell->name, realm_of_cell) == 0) {
588 status = get_credv5(context, AFSKEY, NULL, realm_of_cell,
590 if (!AFS_TRY_FULL_PRINC && TRYAGAIN(status)) {
591 status = get_credv5(context, AFSKEY, cell->name,
592 realm_of_cell, v5cred);
597 /* Try to find a service principal for this cell.
598 * Some broken MIT libraries return KRB5KRB_AP_ERR_MSG_TYPE upon
599 * the first attempt, so we try twice to be sure */
601 if (status == KRB5KRB_AP_ERR_MSG_TYPE && retry == 1)
608 afs_dprintf("Kerberos error code returned by get_cred : %d\n", status);
609 fprintf(stderr, "%s: Couldn't get %s AFS tickets:\n",
610 progname, cell->name);
611 afs_com_err(progname, status, "while getting AFS tickets");
612 #ifdef KRB5_CC_NOT_KTYPE
613 if (status == KRB5_CC_NOT_KTYPE) {
614 fprintf(stderr, "allow_weak_crypto may be required in the Kerberos configuration\n");
617 status = AKLOG_KERBEROS;
621 /* If we've got a valid ticket, and we still don't know the realm name
622 * try to figure it out from the contents of the ticket
624 if (strcmp(realm_of_cell, "") == 0) {
625 status = get_realm_from_cred(context, *v5cred, &realm_from_princ);
628 "%s: Couldn't decode ticket to determine realm for "
630 progname, cell->name);
632 if (realm_from_princ)
633 realm_of_cell = realm_from_princ;
637 /* If the realm of the user and cell differ, then we need to use the
638 * realm when we later construct the user's principal */
639 if (realm_of_cell != NULL && strcmp(realm_of_user, realm_of_cell) != 0)
640 *realmUsed = realm_of_user;
643 if (realm_from_princ)
644 free(realm_from_princ);
645 if (realm_of_user && *realmUsed == NULL)
652 * Build an rxkad token from a Kerberos ticket, using only local tools (that
653 * is, without using a 524 conversion service)
656 * An initialised Kerberos 5 context
658 * A Kerberos credentials structure containing a suitable service ticket
659 * @param[out] tokenPtr
660 * An AFS token structure containing an rxkad token. This is a malloc'd
661 * structure which should be freed by the caller.
662 * @param[out[ userPtr
663 * A string containing the principal of the user to whom the token was
664 * issued. This is a malloc'd block which should be freed by the caller,
668 * 0 on success, an error value upon failure
671 rxkad_build_native_token(krb5_context context, krb5_creds *v5cred,
672 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
673 char username[BUFSIZ]="";
674 struct ktc_token token;
676 #ifdef HAVE_NO_KRB5_524
680 char k4name[ANAME_SZ];
681 char k4inst[INST_SZ];
682 char k4realm[REALM_SZ];
684 void *inkey = get_cred_keydata(v5cred);
685 size_t inkey_sz = get_cred_keylen(v5cred);
687 afs_dprintf("Using Kerberos V5 ticket natively\n");
692 #ifndef HAVE_NO_KRB5_524
693 status = krb5_524_conv_principal (context, v5cred->client,
699 afs_com_err(progname, status,
700 "while converting principal to Kerberos V4 format");
702 strcpy (username, k4name);
704 strcat (username, ".");
705 strcat (username, k4inst);
709 len = min(get_princ_len(context, v5cred->client, 0),
710 second_comp(context, v5cred->client) ?
711 MAXKTCNAMELEN - 2 : MAXKTCNAMELEN - 1);
712 strncpy(username, get_princ_str(context, v5cred->client, 0), len);
713 username[len] = '\0';
715 if (second_comp(context, v5cred->client)) {
716 strcat(username, ".");
717 p = username + strlen(username);
718 len = min(get_princ_len(context, v5cred->client, 1),
719 MAXKTCNAMELEN - strlen(username) - 1);
720 strncpy(p, get_princ_str(context, v5cred->client, 1), len);
725 memset(&token, 0, sizeof(struct ktc_token));
727 token.kvno = RXKAD_TKT_TYPE_KERBEROS_V5;
728 token.startTime = v5cred->times.starttime;;
729 token.endTime = v5cred->times.endtime;
730 if (tkt_DeriveDesKey(get_creds_enctype(v5cred), inkey, inkey_sz,
731 &token.sessionKey) != 0) {
734 token.ticketLen = v5cred->ticket.length;
735 memcpy(token.ticket, v5cred->ticket.data, token.ticketLen);
737 status = token_importRxkadViceId(tokenPtr, &token, 0);
742 if (username[0] != '\0')
743 *userPtr = strdup(username);
749 * Convert a Keberos ticket to an rxkad token, using information obtained
750 * from an external Kerberos 5->4 conversion service. If the code is built
751 * with HAVE_NO_KRB5_524 then this is a stub function which will always
752 * return success without a token.
755 * An initialised Kerberos 5 context
757 * A Kerberos credentials structure containing a suitable service ticket
758 * @param[out] tokenPtr
759 * An AFS token structure containing an rxkad token. This is a malloc'd
760 * structure which should be freed by the caller.
761 * @param[out[ userPtr
762 * A string containing the principal of the user to whom the token was
763 * issued. This is a malloc'd block which should be freed by the caller,
767 * 0 on success, an error value upon failure
770 #ifdef HAVE_NO_KRB5_524
772 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
773 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
781 rxkad_get_converted_token(krb5_context context, krb5_creds *v5cred,
782 struct ktc_tokenUnion **tokenPtr, char **userPtr) {
784 char username[BUFSIZ];
785 struct ktc_token token;
791 afs_dprintf("Using Kerberos 524 translator service\n");
793 status = krb5_524_convert_creds(context, v5cred, &cred);
796 afs_com_err(progname, status, "while converting tickets "
797 "to Kerberos V4 format");
798 return AKLOG_KERBEROS;
801 strcpy (username, cred.pname);
803 strcat (username, ".");
804 strcat (username, cred.pinst);
807 memset(&token, 0, sizeof(struct ktc_token));
809 token.kvno = cred.kvno;
810 token.startTime = cred.issue_date;
812 * It seems silly to go through a bunch of contortions to
813 * extract the expiration time, when the v5 credentials already
814 * has the exact time! Let's use that instead.
816 * Note that this isn't a security hole, as the expiration time
817 * is also contained in the encrypted token
819 token.endTime = v5cred->times.endtime;
820 memcpy(&token.sessionKey, cred.session, 8);
821 token.ticketLen = cred.ticket_st.length;
822 memcpy(token.ticket, cred.ticket_st.dat, token.ticketLen);
824 status = token_importRxkadViceId(tokenPtr, &token, 0);
829 *userPtr = strdup(username);
836 * This function gets an rxkad token for a given cell.
839 * An initialized Kerberos v5 context
841 * The cell information for the cell which we're obtaining a token for
843 * The realm to look in for the service principal. If NULL, then the
844 * realm is determined from the cell name or the user's credentials
845 * (see the documentation for rxkad_get_ticket)
847 * The rxkad token produced. This is a malloc'd structure which should
848 * be freed by the caller.
849 * @parma[out] authuser
850 * A string containing the principal of the user to whom the token was
851 * issued. This is a malloc'd block which should be freed by the caller,
853 * @param[out] foreign
854 * Whether the user is considered as 'foreign' to the realm of the cell.
857 * 0 on success, an error value upon failuer
860 rxkad_get_token(krb5_context context, struct afsconf_cell *cell, char *realm,
861 struct ktc_tokenUnion **token, char **authuser, int *foreign) {
863 char *realmUsed = NULL;
864 char *username = NULL;
871 status = rxkad_get_ticket(context, realm, cell, &v5cred, &realmUsed);
876 status = rxkad_get_converted_token(context, v5cred, token, &username);
878 status = rxkad_build_native_token(context, v5cred, token, &username);
883 /* We now have the username, plus the realm name, so stitch them together
884 * to give us the name that the ptserver will know the user by */
885 if (realmUsed == NULL || username == NULL) {
886 *authuser = username;
890 if (asprintf(authuser, "%s@%s", username, realmUsed) < 0) {
891 fprintf(stderr, "%s: Out of memory building PTS name\n", progname);
909 * Log to a cell. If the cell has already been logged to, return without
910 * doing anything. Otherwise, log to it and mark that it has been logged
914 auth_to_cell(krb5_context context, const char *config,
915 char *cell, char *realm, char **linkedcell)
917 int status = AKLOG_SUCCESS;
919 char *username = NULL; /* To hold client username structure */
920 afs_int32 viceId; /* AFS uid of user */
922 char *local_cell = NULL;
923 struct ktc_tokenUnion *rxkadToken = NULL;
924 struct ktc_setTokenData *token;
925 struct ktc_setTokenData *btoken = NULL;
926 struct afsconf_cell cellconf;
928 /* NULL or empty cell returns information on local cell */
929 if ((status = get_cellconfig(config, cell, &cellconf, &local_cell)))
932 if (linkedcell != NULL) {
933 if (cellconf.linkedCell != NULL) {
934 *linkedcell = strdup(cellconf.linkedCell);
935 if (*linkedcell == NULL) {
944 if (ll_string(&authedcells, ll_s_check, cellconf.name)) {
945 afs_dprintf("Already authenticated to %s (or tried to)\n", cellconf.name);
946 status = AKLOG_SUCCESS;
951 * Record that we have attempted to log to this cell. We do this
952 * before we try rather than after so that we will not try
953 * and fail repeatedly for one cell.
955 ll_string(&authedcells, ll_s_add, cellconf.name);
958 * Record this cell in the list of zephyr subscriptions. We may
959 * want zephyr subscriptions even if authentication fails.
960 * If this is done after we attempt to get tokens, aklog -zsubs
961 * can return something different depending on whether or not we
962 * are in -noauth mode.
964 if (ll_string(&zsublist, ll_s_add, cellconf.name) == LL_FAILURE) {
966 "%s: failure adding cell %s to zephyr subscriptions list.\n",
967 progname, cellconf.name);
970 if (ll_string(&zsublist, ll_s_add, local_cell) == LL_FAILURE) {
972 "%s: failure adding cell %s to zephyr subscriptions list.\n",
973 progname, local_cell);
978 afs_dprintf("Authenticating to cell %s (server %s).\n", cellconf.name,
979 cellconf.hostName[0]);
981 token = token_buildTokenJar(cellconf.name);
987 status = rxkad_get_token(context, &cellconf, realm, &rxkadToken,
988 &username, &isForeign);
992 /* We need to keep the token structure around so that we can stick
993 * the viceId into it (once we know it) */
994 status = token_addToken(token, rxkadToken);
996 afs_dprintf("Add Token failed with %d", status);
1001 ktc_GetTokenEx(cellconf.name, &btoken) == 0 &&
1002 token_SetsEquivalent(token, btoken)) {
1004 token_FreeSet(&btoken);
1005 afs_dprintf("Identical tokens already exist; skipping.\n");
1006 status = AKLOG_SUCCESS;
1011 token_FreeSet(&btoken);
1017 if (username == NULL) {
1018 afs_dprintf("Not resolving name to id\n");
1021 afs_dprintf("Not resolving name %s to id (-noprdb set)\n", username);
1024 afs_dprintf("About to resolve name %s to id in cell %s.\n", username,
1027 if (!pr_Initialize (0, AFSDIR_CLIENT_ETC_DIRPATH, cellconf.name))
1028 status = pr_SNameToId (username, &viceId);
1031 afs_dprintf("Error %d\n", status);
1033 afs_dprintf("Id %d\n", (int) viceId);
1037 * This code is taken from cklog -- it lets people
1038 * automatically register with the ptserver in foreign cells
1041 #ifdef ALLOW_REGISTER
1042 if ((status == 0) && (viceId == ANONYMOUSID) && isForeign) {
1043 afs_dprintf("doing first-time registration of %s at %s\n",
1044 username, cellconf.name);
1047 status = ktc_SetTokenEx(token);
1049 afs_com_err(progname, status,
1050 "while obtaining tokens for cell %s",
1052 status = AKLOG_TOKEN;
1056 * In case you're wondering, we don't need to change the
1057 * filename here because we're still connecting to the
1058 * same cell -- we're just using a different authenticat ion
1062 if ((status = pr_Initialize(1L, AFSDIR_CLIENT_ETC_DIRPATH,
1064 printf("Error %d\n", status);
1067 if ((status = pr_CreateUser(username, &viceId))) {
1068 fprintf(stderr, "%s: %s so unable to create remote PTS "
1069 "user %s in cell %s (status: %d).\n", progname,
1070 afs_error_message(status), username, cellconf.name,
1072 viceId = ANONYMOUSID;
1074 printf("created cross-cell entry for %s (Id %d) at %s\n",
1075 username, viceId, cellconf.name);
1078 #endif /* ALLOW_REGISTER */
1080 if ((status == 0) && (viceId != ANONYMOUSID)) {
1081 status = token_setRxkadViceId(rxkadToken, viceId);
1083 fprintf(stderr, "Error %d setting rxkad ViceId\n", status);
1084 status = AKLOG_SUCCESS;
1086 token_replaceToken(token, rxkadToken);
1092 afs_dprintf("Setting tokens. %s @ %s\n",
1093 username, cellconf.name);
1095 afs_dprintf("Setting tokens for cell %s\n", cellconf.name);
1098 #ifndef AFS_AIX51_ENV
1099 /* on AIX 4.1.4 with AFS 3.4a+ if a write is not done before
1100 * this routine, it will not add the token. It is not clear what
1101 * is going on here! So we will do the following operation.
1102 * On AIX 5, it causes the parent program to die, so we won't.
1103 * We don't care about the return value, but need to collect it
1104 * to avoid compiler warnings.
1106 if (write(2,"",0) < 0) {
1107 /* dummy write, don't care */
1110 token_setPag(token, afssetpag);
1111 status = ktc_SetTokenEx(token);
1113 afs_com_err(progname, status, "while setting tokens for cell %s",
1115 status = AKLOG_TOKEN;
1119 afs_dprintf("Noauth mode; not authenticating.\n");
1123 token_freeToken(&rxkadToken);
1135 get_afs_mountpoint(char *file, char *mountpoint, int size)
1138 char V ='V'; /* AFS has problem on Sun with pioctl */
1140 char our_file[MAXPATHLEN + 1];
1142 char *last_component;
1143 struct ViceIoctl vio;
1144 char cellname[BUFSIZ];
1146 strlcpy(our_file, file, sizeof(our_file));
1148 if ((last_component = strrchr(our_file, DIR))) {
1149 *last_component++ = 0;
1150 parent_dir = our_file;
1153 last_component = our_file;
1157 memset(cellname, 0, sizeof(cellname));
1159 vio.in = last_component;
1160 vio.in_size = strlen(last_component)+1;
1161 vio.out_size = size;
1162 vio.out = mountpoint;
1164 if (!pioctl(parent_dir, VIOC_AFS_STAT_MT_PT, &vio, 0)) {
1165 if (strchr(mountpoint, VOLMARKER) == NULL) {
1167 vio.in_size = strlen(file) + 1;
1168 vio.out_size = sizeof(cellname);
1171 if (!pioctl(file, VIOC_FILE_CELL_NAME, &vio, 1)) {
1172 strlcat(cellname, VOLMARKERSTRING, sizeof(cellname));
1173 strlcat(cellname, mountpoint + 1, sizeof(cellname));
1174 memset(mountpoint + 1, 0, size - 1);
1175 strcpy(mountpoint + 1, cellname);
1185 * This routine each time it is called returns the next directory
1186 * down a pathname. It resolves all symbolic links. The first time
1187 * it is called, it should be called with the name of the path
1188 * to be descended. After that, it should be called with the arguemnt
1192 next_path(char *origpath)
1194 static char path[MAXPATHLEN + 1];
1195 static char pathtocheck[MAXPATHLEN + 1];
1197 ssize_t link; /* Return value from readlink */
1198 char linkbuf[MAXPATHLEN + 1];
1199 char tmpbuf[MAXPATHLEN + 1];
1201 static char *last_comp; /* last component of directory name */
1202 static char *elast_comp; /* End of last component */
1206 static int symlinkcount = 0; /* We can't exceed MAXSYMLINKS */
1208 /* If we are given something for origpath, we are initializing only. */
1210 memset(path, 0, sizeof(path));
1211 memset(pathtocheck, 0, sizeof(pathtocheck));
1212 strlcpy(path, origpath, sizeof(path));
1218 /* We were not given origpath; find then next path to check */
1220 /* If we've gotten all the way through already, return NULL */
1221 if (last_comp == NULL)
1225 while (*last_comp == DIR)
1226 strncat(pathtocheck, last_comp++, 1);
1227 len = (elast_comp = strchr(last_comp, DIR))
1228 ? elast_comp - last_comp : strlen(last_comp);
1229 strncat(pathtocheck, last_comp, len);
1230 memset(linkbuf, 0, sizeof(linkbuf));
1231 link = readlink(pathtocheck, linkbuf, sizeof(linkbuf)-1);
1234 linkbuf[link] = '\0'; /* NUL terminate string */
1236 if (++symlinkcount > MAXSYMLINKS) {
1237 fprintf(stderr, "%s: %s\n", progname, strerror(ELOOP));
1238 exit(AKLOG_BADPATH);
1241 memset(tmpbuf, 0, sizeof(tmpbuf));
1243 strlcpy(tmpbuf, elast_comp, sizeof(tmpbuf));
1244 if (linkbuf[0] == DIR) {
1246 * If this is a symbolic link to an absolute path,
1247 * replace what we have by the absolute path.
1249 memset(path, 0, strlen(path));
1250 memcpy(path, linkbuf, sizeof(linkbuf));
1251 strcat(path, tmpbuf);
1254 memset(pathtocheck, 0, sizeof(pathtocheck));
1258 * If this is a symbolic link to a relative path,
1259 * replace only the last component with the link name.
1261 strncpy(last_comp, linkbuf, strlen(linkbuf) + 1);
1262 strcat(path, tmpbuf);
1264 if ((t = strrchr(pathtocheck, DIR))) {
1266 memset(t, 0, strlen(t));
1269 memset(pathtocheck, 0, sizeof(pathtocheck));
1273 last_comp = elast_comp;
1277 return(pathtocheck);
1281 add_hosts(char *file)
1284 char V = 'V'; /* AFS has problem on SunOS */
1286 struct ViceIoctl vio;
1287 char outbuf[BUFSIZ];
1293 memset(outbuf, 0, sizeof(outbuf));
1295 vio.out_size = sizeof(outbuf);
1299 afs_dprintf("Getting list of hosts for %s\n", file);
1301 /* Don't worry about errors. */
1302 if (!pioctl(file, VIOCWHEREIS, &vio, 1)) {
1303 phosts = (long *) outbuf;
1306 * Lists hosts that we care about. If ALLHOSTS is defined,
1307 * then all hosts that you ever may possible go through are
1308 * included in this list. If not, then only hosts that are
1309 * the only ones appear. That is, if a volume you must use
1310 * is replaced on only one server, that server is included.
1311 * If it is replicated on many servers, then none are included.
1312 * This is not perfect, but the result is that people don't
1313 * get subscribed to a lot of instances of FILSRV that they
1314 * probably won't need which reduces the instances of
1315 * people getting messages that don't apply to them.
1318 if (phosts[1] != '\0')
1321 for (i = 0; phosts[i]; i++) {
1323 in.s_addr = phosts[i];
1324 afs_dprintf("Got host %s\n", inet_ntoa(in));
1325 ll_string(&hostlist, ll_s_add, (char *)inet_ntoa(in));
1327 if (zsubs && (hp=gethostbyaddr((char *) &phosts[i],sizeof(long),AF_INET))) {
1328 afs_dprintf("Got host %s\n", hp->h_name);
1329 ll_string(&zsublist, ll_s_add, hp->h_name);
1336 * This routine descends through a path to a directory, logging to
1337 * every cell it encounters along the way.
1340 auth_to_path(krb5_context context, const char *config, char *path)
1342 int status = AKLOG_SUCCESS;
1343 int auth_status = AKLOG_SUCCESS;
1346 char pathtocheck[MAXPATHLEN + 1];
1347 char mountpoint[MAXPATHLEN + 1];
1356 strlcpy(pathtocheck, path, sizeof(pathtocheck));
1358 if (getcwd(pathtocheck, sizeof(pathtocheck)) == NULL) {
1359 fprintf(stderr, "Unable to find current working directory:\n");
1360 fprintf(stderr, "%s\n", pathtocheck);
1361 fprintf(stderr, "Try an absolute pathname.\n");
1362 exit(AKLOG_BADPATH);
1365 strlcat(pathtocheck, DIRSTRING, sizeof(pathtocheck));
1366 strlcat(pathtocheck, path, sizeof(pathtocheck));
1369 next_path(pathtocheck);
1371 /* Go on to the next level down the path */
1372 while ((nextpath = next_path(NULL))) {
1373 strlcpy(pathtocheck, nextpath, sizeof(pathtocheck));
1374 afs_dprintf("Checking directory %s\n", pathtocheck);
1376 * If this is an afs mountpoint, determine what cell from
1377 * the mountpoint name which is of the form
1378 * #cellname:volumename or %cellname:volumename.
1380 if (get_afs_mountpoint(pathtocheck, mountpoint, sizeof(mountpoint))) {
1381 /* skip over the '#' or '%' */
1382 cell = mountpoint + 1;
1383 /* Add this (cell:volumename) to the list of zsubs */
1385 ll_string(&zsublist, ll_s_add, cell);
1387 add_hosts(pathtocheck);
1388 if ((endofcell = strchr(mountpoint, VOLMARKER))) {
1390 auth_status = auth_to_cell(context, config, cell, NULL, NULL);
1392 if (status == AKLOG_SUCCESS)
1393 status = auth_status;
1394 else if (status != auth_status)
1395 status = AKLOG_SOMETHINGSWRONG;
1400 if (isdir(pathtocheck, &isdirectory) < 0) {
1402 * If we've logged and still can't stat, there's
1405 fprintf(stderr, "%s: stat(%s): %s\n", progname,
1406 pathtocheck, strerror(errno));
1407 return(AKLOG_BADPATH);
1409 else if (! isdirectory) {
1410 /* Allow only directories */
1411 fprintf(stderr, "%s: %s: %s\n", progname, pathtocheck,
1413 return(AKLOG_BADPATH);
1423 /* Print usage message and exit */
1427 fprintf(stderr, "\nUsage: %s %s%s%s\n", progname,
1428 "[-d] [[-cell | -c] cell [-k krb_realm]] ",
1429 "[[-p | -path] pathname]\n",
1430 " [-zsubs] [-hosts] [-noauth] [-noprdb] [-force] [-setpag] \n"
1432 #ifndef HAVE_NO_KRB5_524
1436 fprintf(stderr, " -d gives debugging information.\n");
1437 fprintf(stderr, " krb_realm is the kerberos realm of a cell.\n");
1438 fprintf(stderr, " pathname is the name of a directory to which ");
1439 fprintf(stderr, "you wish to authenticate.\n");
1440 fprintf(stderr, " -zsubs gives zephyr subscription information.\n");
1441 fprintf(stderr, " -hosts gives host address information.\n");
1442 fprintf(stderr, " -noauth does not attempt to get tokens.\n");
1443 fprintf(stderr, " -noprdb means don't try to determine AFS ID.\n");
1444 fprintf(stderr, " -force means replace identical tickets. \n");
1445 fprintf(stderr, " -linked means if AFS node is linked, try both. \n");
1446 fprintf(stderr, " -setpag set the AFS process authentication group.\n");
1447 #ifndef HAVE_NO_KRB5_524
1448 fprintf(stderr, " -524 means use the 524 converter instead of V5 directly\n");
1450 fprintf(stderr, " No commandline arguments means ");
1451 fprintf(stderr, "authenticate to the local cell.\n");
1452 fprintf(stderr, "\n");
1457 main(int argc, char *argv[])
1459 krb5_context context;
1460 int status = AKLOG_SUCCESS;
1462 int somethingswrong = FALSE;
1464 cellinfo_t cellinfo;
1466 extern char *progname; /* Name of this program */
1468 int cmode = FALSE; /* Cellname mode */
1469 int pmode = FALSE; /* Path name mode */
1471 char realm[REALM_SZ]; /* Kerberos realm of afs server */
1472 char cell[BUFSIZ]; /* Cell to which we are authenticating */
1473 char path[MAXPATHLEN + 1]; /* Path length for path mode */
1475 linked_list cells; /* List of cells to log to */
1476 linked_list paths; /* List of paths to log to */
1479 const char *config = AFSDIR_CLIENT_ETC_DIRPATH;
1481 memset(&cellinfo, 0, sizeof(cellinfo));
1483 memset(realm, 0, sizeof(realm));
1484 memset(cell, 0, sizeof(cell));
1485 memset(path, 0, sizeof(path));
1493 /* Store the program name here for error messages */
1494 if ((progname = strrchr(argv[0], DIR)))
1499 #if defined(KRB5_PROG_ETYPE_NOSUPP) && !(defined(HAVE_KRB5_ENCTYPE_ENABLE) || defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO))
1501 char *filepath = NULL, *newpath = NULL;
1502 #ifndef AFS_DARWIN_ENV
1503 char *defaultpath = "/etc/krb5.conf:/etc/krb5/krb5.conf";
1505 char *defaultpath = "~/Library/Preferences/edu.mit.Kerberos:/Library/Preferences/edu.mit.Kerberos";
1507 filepath = getenv("KRB5_CONFIG");
1509 /* only fiddle with KRB5_CONFIG if krb5-weak.conf actually exists */
1510 if (asprintf(&newpath, "%s/krb5-weak.conf",
1511 AFSDIR_CLIENT_ETC_DIRPATH) < 0)
1513 if (newpath != NULL && access(newpath, R_OK) == 0) {
1516 if (asprintf(&newpath, "%s:%s/krb5-weak.conf",
1517 filepath ? filepath : defaultpath,
1518 AFSDIR_CLIENT_ETC_DIRPATH) < 0)
1521 setenv("KRB5_CONFIG", newpath, 1);
1524 krb5_init_context(&context);
1526 #if defined(KRB5_PROG_ETYPE_NOSUPP) && !(defined(HAVE_KRB5_ENCTYPE_ENABLE) || defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO))
1530 setenv("KRB5_CONFIG", filepath, 1);
1532 unsetenv("KRB5_CONFIG");
1535 initialize_KTC_error_table ();
1536 initialize_U_error_table();
1537 initialize_RXK_error_table();
1538 initialize_ACFG_error_table();
1539 initialize_PT_error_table();
1540 afs_set_com_err_hook(redirect_errors);
1543 * Enable DES enctypes, which are currently still required for AFS.
1544 * krb5_allow_weak_crypto is MIT Kerberos 1.8. krb5_enctype_enable is
1547 #if defined(HAVE_KRB5_ENCTYPE_ENABLE)
1548 i = krb5_enctype_valid(context, ETYPE_DES_CBC_CRC);
1550 krb5_enctype_enable(context, ETYPE_DES_CBC_CRC);
1551 #elif defined(HAVE_KRB5_ALLOW_WEAK_CRYPTO)
1552 krb5_allow_weak_crypto(context, 1);
1555 /* Initialize list of cells to which we have authenticated */
1556 ll_init(&authedcells);
1558 /* Parse commandline arguments and make list of what to do. */
1559 for (i = 1; i < argc; i++) {
1560 if (strcmp(argv[i], "-d") == 0)
1562 else if (strcmp(argv[i], "-noauth") == 0)
1564 else if (strcmp(argv[i], "-zsubs") == 0)
1566 else if (strcmp(argv[i], "-hosts") == 0)
1568 else if (strcmp(argv[i], "-noprdb") == 0)
1570 else if (strcmp(argv[i], "-linked") == 0)
1572 else if (strcmp(argv[i], "-force") == 0)
1574 #ifndef HAVE_NO_KRB5_524
1575 else if (strcmp(argv[i], "-524") == 0)
1578 else if (strcmp(argv[i], "-setpag") == 0)
1580 else if (((strcmp(argv[i], "-cell") == 0) ||
1581 (strcmp(argv[i], "-c") == 0)) && !pmode)
1584 strlcpy(cell, argv[i], sizeof(cell));
1588 else if ((strcmp(argv[i], "-keytab") == 0))
1594 else if ((strcmp(argv[i], "-principal") == 0))
1600 else if (((strcmp(argv[i], "-path") == 0) ||
1601 (strcmp(argv[i], "-p") == 0)) && !cmode)
1604 strlcpy(path, argv[i], sizeof(path));
1608 else if (strcmp(argv[i], "-config") == 0)
1614 else if (argv[i][0] == '-')
1616 else if (!pmode && !cmode) {
1617 if (strchr(argv[i], DIR) || (strcmp(argv[i], ".") == 0) ||
1618 (strcmp(argv[i], "..") == 0)) {
1620 strlcpy(path, argv[i], sizeof(path));
1624 strlcpy(cell, argv[i], sizeof(cell));
1631 if (((i + 1) < argc) && (strcmp(argv[i + 1], "-k") == 0)) {
1634 strlcpy(realm, argv[i], sizeof(realm));
1638 /* Add this cell to list of cells */
1639 strcpy(cellinfo.cell, cell);
1640 strcpy(cellinfo.realm, realm);
1641 if ((cur_node = ll_add_node(&cells, ll_tail))) {
1643 if ((new_cellinfo = copy_cellinfo(&cellinfo)))
1644 ll_add_data(cur_node, new_cellinfo);
1647 "%s: failure copying cellinfo.\n", progname);
1652 fprintf(stderr, "%s: failure adding cell to cells list.\n",
1656 memset(&cellinfo, 0, sizeof(cellinfo));
1658 memset(cell, 0, sizeof(cell));
1659 memset(realm, 0, sizeof(realm));
1662 /* Add this path to list of paths */
1663 if ((cur_node = ll_add_node(&paths, ll_tail))) {
1665 if ((new_path = strdup(path)))
1666 ll_add_data(cur_node, new_path);
1668 fprintf(stderr, "%s: failure copying path name.\n",
1674 fprintf(stderr, "%s: failure adding path to paths list.\n",
1679 memset(path, 0, sizeof(path));
1683 /* If nothing was given, log to the local cell. */
1684 if ((cells.nelements + paths.nelements) == 0) {
1687 status = auth_to_cell(context, config, NULL, NULL, &linkedcell);
1689 /* If this cell is linked to a DCE cell, and user requested -linked,
1690 * get tokens for both. This is very useful when the AFS cell is
1691 * linked to a DFS cell and this system does not also have DFS.
1694 if (!status && linked && linkedcell != NULL) {
1695 afs_dprintf("Linked cell: %s\n", linkedcell);
1696 status = auth_to_cell(context, config, linkedcell, NULL, NULL);
1704 * Local hack - if the person has a file in their home
1705 * directory called ".xlog", read that for a list of
1706 * extra cells to authenticate to
1709 if ((pwd = getpwuid(getuid())) != NULL) {
1712 char fcell[100], xlog_path[512];
1714 strlcpy(xlog_path, pwd->pw_dir, sizeof(xlog_path));
1715 strlcat(xlog_path, "/.xlog", sizeof(xlog_path));
1717 if ((stat(xlog_path, &sbuf) == 0) &&
1718 ((f = fopen(xlog_path, "r")) != NULL)) {
1720 afs_dprintf("Reading %s for cells to authenticate to.\n",
1723 while (fgets(fcell, 100, f) != NULL) {
1726 fcell[strlen(fcell) - 1] = '\0';
1728 afs_dprintf("Found cell %s in %s.\n", fcell, xlog_path);
1730 auth_status = auth_to_cell(context, config, fcell, NULL, NULL);
1731 if (status == AKLOG_SUCCESS)
1732 status = auth_status;
1734 status = AKLOG_SOMETHINGSWRONG;
1740 /* Log to all cells in the cells list first */
1741 for (cur_node = cells.first; cur_node; cur_node = cur_node->next) {
1742 memcpy((char *)&cellinfo, cur_node->data, sizeof(cellinfo));
1743 status = auth_to_cell(context, config, cellinfo.cell,
1744 cellinfo.realm, &linkedcell);
1748 if (linked && linkedcell != NULL) {
1749 afs_dprintf("Linked cell: %s\n", linkedcell);
1750 status = auth_to_cell(context, config, linkedcell,
1751 cellinfo.realm, NULL);
1755 if (linkedcell != NULL) {
1762 /* Then, log to all paths in the paths list */
1763 for (cur_node = paths.first; cur_node; cur_node = cur_node->next) {
1764 status = auth_to_path(context, config, cur_node->data);
1770 * If only one thing was logged to, we'll return the status
1771 * of the single call. Otherwise, we'll return a generic
1772 * something failed status.
1774 if (somethingswrong && ((cells.nelements + paths.nelements) > 1))
1775 status = AKLOG_SOMETHINGSWRONG;
1778 /* If we are keeping track of zephyr subscriptions, print them. */
1780 for (cur_node = zsublist.first; cur_node; cur_node = cur_node->next) {
1781 printf("zsub: %s\n", cur_node->data);
1784 /* If we are keeping track of host information, print it. */
1786 for (cur_node = hostlist.first; cur_node; cur_node = cur_node->next) {
1787 printf("host: %s\n", cur_node->data);
1794 isdir(char *path, unsigned char *val)
1796 struct stat statbuf;
1798 if (lstat(path, &statbuf) < 0)
1801 if ((statbuf.st_mode & S_IFMT) == S_IFDIR)
1809 static krb5_error_code
1810 get_credv5_akimpersonate(krb5_context context,
1812 krb5_principal service_principal,
1813 krb5_principal client_principal,
1816 int *allowed_enctypes,
1818 krb5_creds** out_creds /* out */ )
1820 #if defined(USING_HEIMDAL) || (defined(HAVE_ENCODE_KRB5_ENC_TKT) && defined(HAVE_ENCODE_KRB5_TICKET) && defined(HAVE_KRB5_C_ENCRYPT))
1821 krb5_error_code code;
1823 krb5_kt_cursor cursor[1];
1824 krb5_keytab_entry entry[1];
1826 krb5_creds *creds = 0;
1827 krb5_enctype enctype;
1829 krb5_keyblock session_key[1];
1831 Ticket ticket_reply[1];
1832 EncTicketPart enc_tkt_reply[1];
1833 krb5_address address[30];
1834 krb5_addresses faddr[1];
1835 unsigned int temp_vno[1];
1836 time_t temp_time[2];
1838 krb5_ticket ticket_reply[1];
1839 krb5_enc_tkt_part enc_tkt_reply[1];
1840 krb5_address address[30], *faddr[30];
1844 static int any_enctype[] = {0};
1846 if (!(creds = malloc(sizeof *creds))) {
1850 if (!allowed_enctypes)
1851 allowed_enctypes = any_enctype;
1854 enctype = 0; /* AKIMPERSONATE_IGNORE_ENCTYPE */
1855 kvno = 0; /* AKIMPERSONATE_IGNORE_VNO */
1856 memset((char*)creds, 0, sizeof *creds);
1857 memset((char*)entry, 0, sizeof *entry);
1858 memset((char*)session_key, 0, sizeof *session_key);
1859 memset((char*)ticket_reply, 0, sizeof *ticket_reply);
1860 memset((char*)enc_tkt_reply, 0, sizeof *enc_tkt_reply);
1861 code = krb5_kt_resolve(context, keytab, &kt);
1864 afs_com_err(progname, code, "while resolving keytab %s", keytab);
1866 afs_com_err(progname, code, "while resolving default keytab");
1870 if (service_principal) {
1871 for (i = 0; (enctype = allowed_enctypes[i]) || !i; ++i) {
1872 code = krb5_kt_get_entry(context,
1879 if (allowed_enctypes[i])
1880 deref_keyblock_enctype(session_key) = allowed_enctypes[i];
1885 afs_com_err(progname, code,"while scanning keytab entries");
1889 krb5_keytab_entry new[1];
1891 memset(new, 0, sizeof *new);
1892 if ((code = krb5_kt_start_seq_get(context, kt, cursor))) {
1893 afs_com_err(progname, code, "while starting keytab scan");
1896 while (!(code = krb5_kt_next_entry(context, kt, new, cursor))) {
1898 allowed_enctypes[i] && allowed_enctypes[i]
1899 != deref_entry_enctype(new); ++i)
1901 if ((!i || allowed_enctypes[i]) &&
1902 (best < 0 || best > i)) {
1903 krb5_free_keytab_entry_contents(context, entry);
1905 memset(new, 0, sizeof *new);
1906 } else krb5_free_keytab_entry_contents(context, new);
1908 if ((i = krb5_kt_end_seq_get(context, kt, cursor))) {
1909 afs_com_err(progname, i, "while ending keytab scan");
1914 afs_com_err(progname, code, "while scanning keytab");
1917 deref_keyblock_enctype(session_key) = deref_entry_enctype(entry);
1923 if ((code = krb5_generate_random_keyblock(context,
1924 deref_keyblock_enctype(session_key), session_key))) {
1925 afs_com_err(progname, code, "while making session key");
1928 enc_tkt_reply->flags.initial = 1;
1929 enc_tkt_reply->transited.tr_type = DOMAIN_X500_COMPRESS;
1930 enc_tkt_reply->cname = client_principal->name;
1931 enc_tkt_reply->crealm = client_principal->realm;
1932 enc_tkt_reply->key = *session_key;
1934 static krb5_data empty_string;
1935 enc_tkt_reply->transited.contents = empty_string;
1937 enc_tkt_reply->authtime = starttime;
1938 enc_tkt_reply->starttime = temp_time;
1939 *enc_tkt_reply->starttime = starttime;
1941 enc_tkt_reply->renew_till = temp_time + 1;
1942 *enc_tkt_reply->renew_till = endtime;
1944 enc_tkt_reply->endtime = endtime;
1946 if ((code = krb5_c_make_random_key(context,
1947 deref_keyblock_enctype(session_key), session_key))) {
1948 afs_com_err(progname, code, "while making session key");
1951 enc_tkt_reply->magic = KV5M_ENC_TKT_PART;
1952 #define DATACAST (unsigned char *)
1953 enc_tkt_reply->flags |= TKT_FLG_INITIAL;
1954 enc_tkt_reply->transited.tr_type = KRB5_DOMAIN_X500_COMPRESS;
1955 enc_tkt_reply->session = session_key;
1956 enc_tkt_reply->client = client_principal;
1958 static krb5_data empty_string;
1959 enc_tkt_reply->transited.tr_contents = empty_string;
1961 enc_tkt_reply->times.authtime = starttime;
1962 enc_tkt_reply->times.starttime = starttime; /* krb524init needs this */
1963 enc_tkt_reply->times.endtime = endtime;
1964 #endif /* USING_HEIMDAL */
1965 /* NB: We will discard address for now--ignoring caddr field
1966 in any case. MIT branch does what it always did. */
1968 if (paddress && *paddress) {
1969 deref_enc_tkt_addrs(enc_tkt_reply) = faddr;
1972 faddr->val = address;
1974 for (i = 0; paddress[i]; ++i) {
1976 address[i].addr_type = KRB5_ADDRESS_INET;
1977 address[i].address.data = (void*)(paddress+i);
1978 address[i].address.length = sizeof(paddress[i]);
1981 address[i].magic = KV5M_ADDRESS;
1982 address[i].addrtype = ADDRTYPE_INET;
1984 address[i].addrtype = AF_INET;
1986 address[i].contents = (void*)(paddress+i);
1987 address[i].length = sizeof(int);
1988 faddr[i] = address+i;
1999 ticket_reply->sname = service_principal->name;
2000 ticket_reply->realm = service_principal->realm;
2002 { /* crypto block */
2003 krb5_crypto crypto = 0;
2004 unsigned char *buf = 0;
2005 size_t buf_size, buf_len;
2008 ASN1_MALLOC_ENCODE(EncTicketPart, buf, buf_size,
2009 enc_tkt_reply, &buf_len, code);
2011 afs_com_err(progname, code, "while encoding ticket");
2015 if(buf_len != buf_size) {
2016 afs_com_err(progname, code,
2017 "%u != %u while encoding ticket (internal ASN.1 encoder error",
2018 (unsigned int)buf_len, (unsigned int)buf_size);
2021 what = "krb5_crypto_init";
2022 code = krb5_crypto_init(context,
2023 &deref_entry_keyblock(entry),
2024 deref_entry_enctype(entry),
2027 what = "krb5_encrypt";
2028 code = krb5_encrypt_EncryptedData(context, crypto, KRB5_KU_TICKET,
2029 buf, buf_len, entry->vno, &(ticket_reply->enc_part));
2032 if (crypto) krb5_crypto_destroy(context, crypto);
2034 afs_com_err(progname, code, "while %s", what);
2037 } /* crypto block */
2038 ticket_reply->enc_part.etype = deref_entry_enctype(entry);
2039 ticket_reply->enc_part.kvno = (void *)temp_vno;
2040 *ticket_reply->enc_part.kvno = entry->vno;
2041 ticket_reply->tkt_vno = 5;
2043 ticket_reply->server = service_principal;
2044 ticket_reply->enc_part2 = enc_tkt_reply;
2045 if ((code = krb5_encrypt_tkt_part(context, &deref_entry_keyblock(entry), ticket_reply))) {
2046 afs_com_err(progname, code, "while making ticket");
2049 ticket_reply->enc_part.kvno = entry->vno;
2052 /* Construct Creds */
2054 if ((code = krb5_copy_principal(context, service_principal,
2056 afs_com_err(progname, code, "while copying service principal");
2059 if ((code = krb5_copy_principal(context, client_principal,
2061 afs_com_err(progname, code, "while copying client principal");
2064 if ((code = krb5_copy_keyblock_contents(context, session_key,
2065 &deref_session_key(creds)))) {
2066 afs_com_err(progname, code, "while copying session key");
2071 creds->times.authtime = enc_tkt_reply->authtime;
2072 creds->times.starttime = *(enc_tkt_reply->starttime);
2073 creds->times.endtime = enc_tkt_reply->endtime;
2074 creds->times.renew_till = 0; /* *(enc_tkt_reply->renew_till) */
2075 creds->flags.b = enc_tkt_reply->flags;
2077 creds->times = enc_tkt_reply->times;
2078 creds->ticket_flags = enc_tkt_reply->flags;
2080 if (!deref_enc_tkt_addrs(enc_tkt_reply))
2082 else if ((code = krb5_copy_addresses(context,
2083 deref_enc_tkt_addrs(enc_tkt_reply), &creds->addresses))) {
2084 afs_com_err(progname, code, "while copying addresses");
2090 size_t creds_tkt_len;
2091 ASN1_MALLOC_ENCODE(Ticket, creds->ticket.data, creds->ticket.length,
2092 ticket_reply, &creds_tkt_len, code);
2094 afs_com_err(progname, code, "while encoding ticket");
2099 if ((code = encode_krb5_ticket(ticket_reply, &temp))) {
2100 afs_com_err(progname, code, "while encoding ticket");
2103 creds->ticket = *temp;
2110 if (deref_enc_data(&ticket_reply->enc_part))
2111 free(deref_enc_data(&ticket_reply->enc_part));
2112 krb5_free_keytab_entry_contents(context, entry);
2113 if (client_principal)
2114 krb5_free_principal(context, client_principal);
2115 if (service_principal)
2116 krb5_free_principal(context, service_principal);
2118 krb5_cc_close(context, cc);
2120 krb5_kt_close(context, kt);
2121 if (creds) krb5_free_creds(context, creds);
2122 krb5_free_keyblock_contents(context, session_key);
2130 static krb5_error_code
2131 get_credv5(krb5_context context, char *name, char *inst, char *realm,
2136 static krb5_principal client_principal = 0;
2138 afs_dprintf("Getting tickets: %s%s%s@%s\n", name,
2139 (inst && inst[0]) ? "/" : "", inst ? inst : "", realm);
2141 memset(&increds, 0, sizeof(increds));
2142 /* ANL - instance may be ptr to a null string. Pass null then */
2143 if ((r = krb5_build_principal(context, &increds.server,
2144 strlen(realm), realm,
2146 (inst && strlen(inst)) ? inst : NULL,
2152 if (!_krb425_ccache) {
2153 r = krb5_cc_default(context, &_krb425_ccache);
2157 if (!client_principal) {
2159 r = krb5_parse_name(context, client, &client_principal);
2161 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2167 increds.client = client_principal;
2168 increds.times.endtime = 0;
2170 /* Ask for DES since that is what V4 understands */
2171 get_creds_enctype((&increds)) = ENCTYPE_DES_CBC_CRC;
2174 int allowed_enctypes[] = {
2175 ENCTYPE_DES_CBC_CRC, 0
2178 r = get_credv5_akimpersonate(context,
2187 r = krb5_get_credentials(context, 0, _krb425_ccache, &increds, creds);
2194 get_user_realm(krb5_context context, char **realm)
2196 static krb5_principal client_principal = 0;
2197 krb5_error_code r = 0;
2201 if (!_krb425_ccache) {
2202 r = krb5_cc_default(context, &_krb425_ccache);
2206 if (!client_principal) {
2208 r = krb5_parse_name(context, client, &client_principal);
2210 r = krb5_cc_get_principal(context, _krb425_ccache, &client_principal);
2216 *realm = extract_realm(context, client_principal);